27 Series Explosion-Proof Poppet Valves
Thank You!
You have purchased a premium-quality ROSS
®
pneumatic valve.
It is a poppet valve designed for inline mounting, and has been
built to the highest standards.
With care in its installation and maintenance, you can expect it to
have a long and economical service life. So before you go any
further, please take a few minutes to look over the information
in this folder. Then save it for future reference and for the useful
service information it contains. A general service manual with
more detailed information is available from ROSS upon request.
VALVE INSTALLATION
Pneumatic equipment should be installed only by
persons trained and experienced in such installation.
Important Note:
ROSS 27 Series valves are not designed as control
valves for air clutch/brake mechanisms on mechanical
power presses, and must not be installed for such use.
Only double valves conforming to OSHA standards
shall be used in such applications.
Air Lines: Before installing a valve in a new or an
existing system, the air lines must be blown clean of
all contaminants. It is recommended that an air filter be
installed in the inlet line close to the valve.
Valve Inlet (Port 1): Be sure that the supply line is
of adequate size and does not restrict the air supply
because of a crimp in the line, a sharp bend, or a
clogged filter element.
Valve Outlets (Ports 2 and 4): For faster pressurizing
and exhausting of the mechanism being operated by
the valve, locate the valve as close as possible to the
mechanism. The lines must be of adequate size and be
free of crimps and sharp bends.
Valve Exhausts (Port 3): Do not restrict the air flow
from the exhaust port of the valve body or pilot body
as this can adversely affect the operation of the valve.
However, to reduce exhaust noise, an efficient silencer
may be used. ROSS silencers reduce impact noise by
as much as 25 dB, and produce little back pressure.
Electrical Supply: The voltage and hertz ratings of the
valve solenoids (if any) are shown on the pilot housing.
The electrical supply must correspond to these ratings
otherwise the solenoids are subject to early failure.
The power supply must be capable of handling the
maximum power. See Valve Specifications on page 3
for information on maximum power.
Operating Pressures and Temperatures: Allowable
ranges for pressure and temperatures are given in the
Valve Specifications on page 3. Exceeding the values
shown can shorten valve life.
Pilot Supply:
Pressure for the pilot valve is supplied internally for most
valves, and requires no special connection. See Valve
Specifications, for pressure requirements.
Pipe Installation: To install pipe in valve ports,
engage pipe one turn, apply pipe thread sealant (tape
not recommended), and tighten pipe. This procedure
will prevent sealant from entering and contaminating
the valve.
IMPORTANT NOTE: Please read carefully and thoroughly all the WARNINGS and CAUTIONS on page 4.
ROSS CONTROLS
®
www.rosscontrols.com
Please read and make sure you understand all installation instructions before proceeding with the installation.
Additional technical documentation is available for download at www.rosscontrols.com.
If you have any questions about installation or servicing your valve, please contact ROSS or your authorized ROSS
distributor, see contact information listed at the back of this document, or visit www.rosscontrols.com to find your distributor.
To Next Page
Need help?
General
